# efficient and accurate approximation of error function

I am looking for the numerical approximation of error function, which must be efficient and accurate. Thanks in advance $$\mathrm{erf}(z)=\frac2{\sqrt\pi}\int_0^z e^{-t^2} \,\mathrm dt$$

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Wiki suggests an approximation en.wikipedia.org/wiki/… –  user17762 Jun 3 '11 at 2:37
possible duplicate of Definite integral of Normal Distribution –  user17762 Jun 3 '11 at 2:43
–  cardinal Jun 3 '11 at 8:30
possible duplicate of How to accurately calculate erf(x) with a computer? –  Ｊ. Ｍ. Jul 23 '11 at 15:26